Description

The mlib_ImageThresh4_Fp() function compares each pixel
in the source image to two threshold values, tlow and
thigh. If the pixel is less than the lower threshold value,
tlow, then the destination pixel is set to the lower output
level, glow. If the pixel is greater than the higher
threshold value, thigh, then the destination pixel is set
to the higher output level, ghigh. Otherwise, the
destination pixel is set to the value of the source pixel.